Pump-box



UTE S YAS xrnn'r carros.

JOHN MUNSON, OF SAN JOSE, CALIFORNIA.

PUMP-B OX.

To aZZ whom it may concern:

Be it known that I, JOHN MUNsoN, of San Jose, in the county of SantaClara and State of California, have invented a new and usefulImprovement in Pump-Boxes; and I do hereby declare that the following isa full, clear, and exact description of the same, reference being had tothe annexed drawings, making a part of this specification, in which-Figure l, is a vertical section of a pump cylinder with its boxes andvalves which are also bisected, fr, m, Fig. 2, indicates the plane ofsection. Fig. 2, is an external detached view of the upper box. Fig. 3,is a horizontal section of the lower one taken in the line y, y, FslSimilar letters of reference indicate corresponding parts in the severalfigures.

This invention consists in a peculiar manner of constructing the boxesand arranging the valves therein as hereinafter fully shown anddescribed, whereby the boxes may have their packing secured to them withthe greatest facility and the valves kept in proper position and workingorder.

The invention also consists in a peculiar manner of attaching the lowerbox to the lower end of the pump cylinder.

To enable those skilled in the art to fully understand and construct myinvention I will proceed to describe it.

A, represents a pump cylinder. B, is the l upper and C, the lower box,which is permanently secured in the lower part of the cylinder. Bothboxes are constructed precisely similarly, a rod D, being attached tothe upper box B, which slides or works as usual up and down within thecylinder.

The boxes B, C, are constructed as follows z-An annular ring a, formsthe bottom of each box, the lower part of each ring fits snugly in thecylinder, as may be shown at a', and the upper portion a, isconsiderably smaller in diameter than the lower portion so as to leave agroove or recess Z), on a horizontal annular surface b, which forms theconnection between a', and a, as shown clearly in Fig. 1.

The low'er parts a, of the boxes are perfectly circular, but the upperparts a, have two indentations or curvatures c, o, to receive bolts CZ,CZ, which pass up through the horizontal parts Zi, of the rings a, attwo opposite points, the heads of the bolts being at the under sides ofsaid parts b.

plates g, two to each, placed at opposite points on them, said platesextending upward at the outer side of each bolt d, and forming a supportfor traverse plates h,

through which the bolts cZ, cZ, pass, one near each end, the plate h,being secured in proper position by nuts z', on the upper ends of thebolts eZ, cZ. In the sides of the plates h, at

their centers, ,recesses y', are made to receive guide rods Z3, 7c,which are attached to valves Z, which rest on the upper surfaces oredges of the parts a, of the rings a. The valves Z,

are simply circular plates the lower surfaces of which may have packingm, as shown in the lower box C, in Fig. 1, or the under surfaces may beground and made to fit snugly the upper edges of c, as shown in Fig. 1.The edges of the valves Z, have recesses a, made in them at oppositepoints of their peripheries to receive the bolts eZ, eZ.

On the horizontal parts Z9', of the rings a, of the boxes, packing 0, isplaced. This packing may be an annular piece of leather or othersuitable material and the packing of the upper box B, is of suflicientwidth to permit of being bent upward and fitting water tight between thecylinder A, and band e. The packing it will be seen is secured betweenthe lower edges of the bands e, and horizontal parts b, of the rings d,the nuts z', by being properly turned binding the band e firmly down onthe inner edge of the packing.

It will be seen from the above description that the valves Z, are guidedboth by the bolts (Z, (Z, and the rods Zo, Zc, without a lower bridge ortraverse bar, and consequently they cannot become deranged or renderedinoperative by getting out of proper position. The packing 0, also isfirmly secured in position, and the band e, is prevented from casuallyturning by the cleats f, at' the inner side of the band, between whichcleats the bolts CZ, pass, the traverse plate ZL, also into the underside of which the upper ends of the upright plates g, g, fit, assist thecleats f, in keeping the band e, in proper position. Each part thereforeof the box and valve have a mutual dependence one on the other, and avery simple economical and eicient device is obtained for the desiredpurpose.

In the lower part of the cylinder A, there is a ange a* secured orattached. This ange is recessed at two opposite points b", bx, see Fig.3, to allow the ends of the plate L, to pass up Within the cylinder. Theupper edge of the flange ax, is of spiral or inclined form, and the boxC, is secured to the cylinder by passing its plate 7L, up through theflange ax, and then turning the box so that the ends of the plate It,will rest on the upper edges of the flange, said edges in consequence ofbeing inclined planes, drawing the packing o, snugly against the bottomof cylinder A.

I would remark that all the parts With the exception of course of thepacking may be of cast metal. The rod D, is attached to the traverseplate h, and may be of Wood or metal.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent, is,

l. Constructing the pump boxes of the rings cz, bands e, provided Withthe uprights g, g, and the traverse plates h, when the boxes thusconstructed are provided with the Valves Z, fitted thereon and arrangedsubstantially as herein shown and described.

2. I further claim securing the lower box C, in the bottom of thecylinder A, by means of the traverse plate 71 on said box, and flangeax, secured to the inner side of the cylinder substantially asdescribed.

JOI-IN MUNSON.

Vitnesses C. WV. POMEROY, G. I-I. LELAND.

